README.md in foreman_bootdisk-5.0.0 vs README.md in foreman_bootdisk-6.0.0

@@ -38,9 +38,10 @@
 | <= 1.3          | ~> 1.0         |
 | >= 1.4          | ~> 2.0         |
 | >= 1.6          | ~> 3.0         |
 | >= 1.7          | ~> 4.0         |
 | >= 1.8          | ~> 5.0         |
+| >= 1.9          | ~> 6.0         |
 
 # Usage
 
 ## Configuration